|
|
|
| High Temperature Air Combustion of Dome Combustion Hot Blast Stove |
| ZHANG Fu-ming1，HU Zu-rui1，CHENG Shu-sen2 |
1. Beijing Shougang International Engineering Technology Co., Ltd., Beijing 100043, China
2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China |
|
|
|
|
Abstract NOx is the major technical barrier to increase hot blast temperature and prolong campaign life of hot blast stove at present. In order to restrain the amount of NOx formation during combustion process in the hot blast stove, the generation mechanism of NOx production was investigated, and NOx generation rate and amount in hot blast stove was calculated by means of thermodynamic generation model. A new dome combustion stove was developed based on high temperature air combustion (HTAC) technology. A comparison on the combustion process and characteristic of conventional hot blast stove and HTAC hot blast stove was performed by application of CFD simulation model. Temperature and concentration field distribution, flame shape and NOx concentration distribution of two kinds of stove was calculated. The result shows quite symmetrical HTAC stove temperature field distribution. Under the same dome temperature, NOx generation is 80×10-6 only, reduced by approx 76% in comparison with conventional stove. HTAC hot blast stove can get higher temperature and decrease NOx emission efficiently, as well as realize long campaign life of hot blast stove and energy-saving and emission reduction.
|
|
Received: 22 August 2011
Published: 05 September 2012
|
|
|
|
| [1] |
ZHANG Fu-ming1,HU Zu-rui1,CHENG Shu-sen2,LI Xin1. Combustion Technology of BSK Dome Combustion Hot Blast Stove at Shougang Jingtang[J]. Iron and Steel, 2012, 47(5): 75-81. |
| [2] |
MA Jinfang,WAN Lei,JIA Guoli,LU fei,WANG feng. Technology of High Blast Air Temperature for No.2 BF in Shougang Qian’an Iron and Steel Co., Ltd. [J]. Iron and Steel, 2011, 46(6): 26-31. |
| [3] |
CHEN Guanjun1,ZHANG Jianliang2,MA Jinfang3,JIA Junmin3,CHEN Shanshan2. Study on High Blast Temperature of Blast Furnace[J]. Chinese Journal of Iron and Steel, 2011, 23(05): 15-19. |
| [4] |
ZHOU Hui-min1,ZHANG Hao2,CANG Da-qiang3,BAI Hao3,ZHANG Hai-tao4. Numerical Simulation of High Radiation Coating on Heat Transfer Process in Regenerator of Hot Blast Stove[J]. Chinese Journal of Iron and Steel, 2011, 23(03): 6-10. |
| [5] |
CHEN Shan-Shan Hong-Wei GUO Guan-Jun CHEN Jian-Liang ZHANG Tian-Jun YANG. Numerical simulation of hot blast stove combustion characteristics on the effect of preheated temperature[J]. Chinese Journal of Iron and Steel, 2010, 28(5): 1-1. |
| [6] |
. Study of High Blast Temperature Technology in QIANGANG No.2 Blast Furnace[J]. Iron and Steel, 2010, 45(3): 92-92. |
|
|
|
|
2012, Vol. 47 
